Feature Request - support with :trail

[nevill]

Hi there,
I see there is a parameter options[:trail] right here in ConsumerGroup. Which is used to skip all the old messages in a specific topic. It's very useful if you want to consume an existing topic from the latest.

I would like to have it supported here in fluent plugin.

[repeatedly]

We have a plan to replace poseidon with ruby-kafka.
After replaced that, we will consider it.

[github-actions]

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